1, Tìm x
25/3 - x = 5/6
x = 25/3 - 5/6
x = 50/6 - 5/6
x = 45/6
Vậy x = 45/6
2, Tính .
3/7 * 5/4 + 5/14
= 3 * 5 / 7 * 4 + 5/14
= 15/28 + 5/14
= 15/28 + 10/28
= 25/28 !!
Tíck mk nha !!
bài 1 :
\(\frac{25}{3}-x=\frac{5}{6}\)
\(x=\frac{25}{3}-\frac{5}{6}\)
\(x=\frac{50}{6}-\frac{5}{6}\)
\(x=\frac{15}{2}\)
Bài 2 :
\(\frac{3}{7}\cdot\frac{5}{4}+\frac{5}{14}\)
\(=\frac{15}{28}+\frac{5}{14}\)
\(=\frac{15}{28}+\frac{10}{28}=\frac{25}{28}\)
1. Tìm x: 2. Tính:
\(\frac{25}{3}-x=\frac{5}{6}\) \(\frac{3}{7}x\frac{5}{4}+\frac{5}{14}\)
\(x=\frac{25}{3}-\frac{5}{6}\) \(=\frac{15}{28}+\frac{5}{14}\)
\(x=\frac{15}{2}\) \(=\frac{15}{28}+\frac{10}{28}\)
\(=\frac{15}{28}\)